Finally, we also control the quality of each component and each step in the manufacturing process. A dedicated team of purchasers, engineers, quality inspectors and machine operators works night and day to ensure each component fulfills the stringent Valley quality requirements. Because our suppliers are positioned in america, we can easily perform random inspections of their facilities to make sure they are meeting our quality requirements. All major components are also machined by Valley, providing another quality level control. Your final inspection is conducted by examining each irrigation gearbox gearbox before it really is shipped. And, to help expand ensure Valley quality, randomly selected gearboxes are life-tested in our gearbox testing laboratory.
But, even the best gear design and materials won't help if the gearbox isn't sealed from the components. 
That's why Valley uses a patented six-barrier insight and nine-barrier result seal to keep oil in and problems out. To compensate because of this longer shaft, special wheels are used that truly move the guts of the tire closer to the gearbox output bearing than the industry regular, reducing the strain on the gearbox.
Valley also uses U.S.-made, case-hardened bearings created from ultra-pure steel rather than through-hardened Chinese bearings used by others. Case-hardening provides superior wear features while maintaining the internal toughness of the primary material. Consequently, Valley bearings possess a 40 percent higher load rating.
The Valley gearbox also offers a 52:1 gear ratio. This implies the gearbox uses 4 percent less energy to move the device through the field, but, moreover, the design includes a completely recessed tooth action. With a fully recessed design, the gears maintain lubrication oil between the gears longer, reducing friction for increased load capacity and longer life.